Current regulator



0. KOOK CURRENT REGULATOR Filed Aug. '20, 1924 June 4, 1929.

Fig.1

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Patented June 4, 1929.

o'rro KOOK, or MAGDEBUBGE, GERMANY. r

1 -c-U:anENr REGnL 'ron.

Application filed August '20, 1924, Serial muvsaase, and in Germany: August 31, 1923..

Theinvention relates to a regulatingdevice which by being inserted into channels, in

which currents of air or gas flow, is adapted to making such currents more regular, to

shatter fsolid bodies and especially sparks,

which are contained in the current, and to I counteract any ignition of explosivegases passing the channel.

. In known spark extinguishers two blade wheels,.rotating in inverse sense, are used, but thereby much throttling of the current is produced, it the blades cover the channel.-

area sufficiently for ensuring an efiective eX- tinguishing action and for. belng surely. m

tated by the current. It is also known to provide the blades with perforations for the ,purpose ofidistributing the current particles.

The essential feature of the invention conby the current, and the blades of which are perforated by a great number of holes with sharp edges, at least oneot saidblade Wheels covering nearly the whole channel diameter. Hereby an extraordinary sure action is reached, as later described.

Further essential parts of the invention consist in durable bearings for theblade wheels, and in'combined'meanslfor lubricat 'ing and. cooling said bearings and for'protecting them against dust and heat, so that i sure action is obtained even under .thesevere conditions existing in hot gas curr.ents,asfor instance in locomotive chimneys.

:;by way of example on a spark extinguisher tor use on locomotives,

Fig. 1 being a sectlon ofone form provided; i. serve as counternuts forthe upper ball bearing cones. Covering ring's'15 protect the last low axle provided with a U-shaped coolingpipe according to a modification 1n the construction of the apparatus.

In the first constructional form a hollow.

axle 1 is fitted with an upper arm cross 2 and with lower arm cross 3,adapted to betas tened on different spots, so as to support the apparatus in any channel or chimney ;,,the

arms of said arm crosses are for this pur-i pose of adjustable length.

, On the axle l twoflbladewheelsd, 5 are F mounted, of which the uppermost has vblades which nearly completely cover the chimney .Both blade wheels aretherefor'ef rotated by the gas current in inv'ersedirections.

The invention isillustrated in the drawing right to the left, whilst the lower blade wheel is somewhat smaller and its blades have a pltchgoing from the left to the right.

The blades of both wheels are perforated on their whole surface by a greatnuniber of holes, whlch are properly cut out. from the metal,

so as to be confined bysharp edges. f

The blade wheelst, 5 are fastcned't0 two 7 navesfi, 7, which have flanges for supporting the blades by welding, rivetingor other adapted means. Each of the said n'aves contains two ball bearing rings' 8, 9,in which balls and cones of the typeknown in bicycle, bearings are'insert'ed. It'is alsop'oss'ibleto use instead combinations otradialfbearingsand thrust bearingslof other known types The upper navefi on its; -outer. face envel oped, by two covers 10, 11,- which:have y hollow wa1ls,*constructed0f sheet metal and r filled up with asbestos or similar nonconductorsof heat. The said covers are screwed onto the nave and fit tightlyfagainst its flange. On the lower nave 'Z'the top cover 10 correspondsto that of the upper nave, but the. bottom cover 12 which is. also screwed to the nave has a closed bottomof conical'shape,

so as to form alreceiver for the oilcoming from the bearings; The bottom cover 11.015 I 1 the upper nave has anaXially projecting edge wl1ich engages into an annular tightening groove of atightening body l3 fastened to 90 thev axle 1. The both top covers 10 have their free edgesbent,downwardly'andengaging in similar manner. intoyannular grooves of tlghtening bod es 14;, which s multaneously l ne'ntioned grooves from foreign bodies enter- 7 111g them. 1 Ins de the 15L are fastened to the axle 1,: and.;the tighten-,

ingbodies. have annular groovesfl'Z V in 0011-! g I nection on one hand w1th said branches'and on the other-hand by .borings withthe outer space containing the ball'bearingst -For col-I 1 .lecting theoil coming .tro'mthe bearingsthe coming trom. the lower.nave. j An oil suction c hollow. axlel an'oil tube 16is inserted, which with-two'bran'ches extends to .100 v the spots,.where the said tightening bodies 7 tube 19 extends from the said lowermost point through the hollow axleupwardly and to the suction side of a pump feeding the oil'feed t ubel6.- As may be seen, by the described extraordinary good protection from heat and dust and-by the cooling lubrication the bearings are adapted to sustain high numbers of rev olutions under every circumstance; The oil' may be recooled by a cooler, and be filtered every time before entering the apparatus.

In th'econstructional form, shown in Fig. 2, an oil outlet tube 20, located inside the hollowaxle 1, is attached to the oil 'outlet (18 in Fig; 1) of the upper na ve; this outlet tube passes through a bottom screw 21, which closes the hollow axle 1, into the oil receiver. As also the oil teed pipe 16 is completely closed against the interior of the hollow axle 1, this latter is available for an additional cooling by feeding to it'a special cooling fluid suchasair or water; For teeding a cooling fluid a cooling tube22 is extended into the hollow axle 1 down to its bottom, and an out-' let casing 23 is fastened to theaxle; an out- 1st t b 241s provided for leading the cooling Water or the like. The quantity of oil fed to the bearings may then be reduced and this In this case, itis usually suificient to remove reduces'the friction, with regard to the extraordinary high numbers of'revolutions'.

the remainders of used oil occasionally by imdevice. YVhere the outer heat V is, sufficient to use air cooling by replacing the screwing and removing the bottom cover 12,

11 but an oil suckingtube 19 may be extended from the oil receiver through the bottom screw 21 and the hollow axle to a sucking water in the described circuit by air, which for instance-on locomotives maybe gained from the brake aircontainers, from which 7 pansion. In this case the apparatus maybe it is to be expanded, and cooled by thisjex simplified by dispensing with the oil outlet tube 20,'the bottom screw 21, th'e water outlet 7 tube EM and the upper part of the oil feed tube 16, the latter being bent to the side of the casing 23 with an open mouth.- The air "entering the lower party of the "hollow axle V is mixed with the oil- (for which purpose a ingsafterbeing freed from the air,iwhich is exhausted by'a topopening of the casing 23.2

As modification of the first form of con *struction according to Fig. 1 an additional cooling by water oruair is also, possible by '1. inserting into the hollow axle a Ush p d at 125 or any other closed circuit containing" pumping and recooling means. Such modified construction is shown in-Flgk 3;

produce, may be surely utilized. I

I hubs,and afeed pipe in said is not very high, it,

The action of the blade wheels is the usual one so far as the sparks are destroyed and the gas current is regulated, but the special features according to the invention cause these eftects to be extraordinarily augmented, so that especially on locomotives an essential saving of'fuel (up to 15%) is reached, leak- V age of the boiler tubes'is reduced and the necessity of cleaning the tubes is also reduced,

owing to the extraordinary softening ofthe too strong blows of the flames the moments of steam exhaust and owing to the accelera tion'exerted in the intermediate moments by the blade wheels on the gas current; The" "holes in theblades avoid not only undue throttling of the current but they produce a strong rotating moment on the blades,-and' at once the numberofrevolutions of the blade wheels is revented from becomin too reat as ow ing to the holes the rotating moment essentially decrea'ses'with increasing number of revolutions. jHereby'not onlydestruction of v the blade wheels by the centrifugal forces is avoided, but also the bearings areenabled to conserve theirgood actionas the reduced velocity of rotation entire'with the-good cooling and lubrication gives the possibility of surely running the'apparatus. Thus the great advantages, which the apparatus is able to I clalm v H 1. A'bearing of the class described,=comprising in combination an upright hollow axle; bearings supported on said axle, r0

tatable. hubs enclosing said bearings, heat resisting. protecting covers on said rotatable ing a lubricating fluid.

axle for supply- ,2. A bearing of theclass described, comprising in I combination an upright hollow a cooling fluid, such as water or air, through the said hollow axle.

tatable hubs enclosing said -bearings,'heat resistlng protecting covers on said rotatable hubs, and a feed pipe in said axle for supply- 4 ing a lubricating fluid, atightening nutclosing the bottom end of'the said hollow axle,

an oiloutlet tube extending fromsthelower parts of the said bearings through said 1101-, low axle and'tightening nut, a feed pipe for 4. A bearing of the class describedhcom axle, bearings supported on said axle, ro-

. tatable hubs enclosing said bearings, heat 're- 'fe'eding cooling fluid to the bottom of said hollow axle, and a discharge pipe attached, V Tito the topend of said hollow'axle.

" coolingpipe 25'the' bend of which is'shown 'prisingin combination an upright hollow 105 axle, bearings supported on said axle, ro; f tatable hubs enclosing said bearings, heat re-' sisting protectingcovers' on said'rotatable hubs, and afeed pipe in said axle for'supply ing a-lubricating'fiuid,and means for leading sisting protecting covers on said'rotatable hubs, and a feed pipe in said axle for supplyinga lubricating fluid, each of said heat protecting covers consisting of an upper and a lower double walled sheet metal casing,'the

walls of which are filled with heat protecting material. 1 I

5. A bearing of the class described, comprising in combination an upright hollow axle, bearings supported on said axle, ro-

tatable hubs enclosing said bearings, heat resisting protecting covers on sald rotatable hubs, having peripheral bent edges at their ends, a feed pipe in said axle to supply lubricating fluid tightening bodies fastened to 7 said hollow axle and provided in their upper sides with annular grooves, said covers having downwardly extending annular. flanges arranged in said grooves.

6. A bearing of the class 1 risin in combination an u ri hthollow p o v 'axle, bearings on said axle, rotatable hubs enclosing said bearings, heat resisting covers on said hubs, a feed pipe in saidaxle for sup-' described, complying a lubricating fluidto said bearings,-a

tightening nut closing'the bottom end of the said hollow axle, an oil outlet tube'extending from the lower parts of'the said bearings axle. t v i 7. A bearing as claimed in'claim 2 intwhich said protecting covers on said rotatable hubs are hollow and comprise each an outer wall and inner wall and insulatingmaterial between, said walls; I

8. A bearing'as claimed said protecting" covers on said rotatable hubs are hollow' and comprise each an outer Wall and inner wall and insulating material bein claim 2 in which 3 tween said walls and in which said rotatable hubs are providedwith flanges which secure said covers to said hubs. t p ,1 In witness whereof I affix my slgnat'ure',

OTTO KooKf 7 i 

